Paper feed device



Oct. 23, 1945. Y G. w. WENDER I 2,387,311

PAPER FEED DEVICE Filed Oct. 17, 1944 2 Sheets-Sheet INVENTOR. I

Oct. 23,1945. I G. ,w. WENDER 387,3 1

PAPER FEED DEVICE Filed Oct. 17, 1944 '2 Sheets-Sheec 2 fiTTORNEV Patented Oct. 23, 1945 2,387,311 PAPER FEED DEVICE George W. Wender, United States Army,

Camp Ritchie, Md.

Application October 17, 1944, Serial N 0. 559,111

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) 8 Claims The invention described herein, if patented may be manufactured and used by or for the Government for governmental purposes, without the payment to me of any royalty thereon.

This invention relates to a Mimeograph machine, and more particularly to an improved feeding device for feeding impression paper to the printing or stenciling cylinders of the machine.

the upper surface of the uppermost sheet of paper. This lint is subsequently deposited on the stencil in its printing area, thereby seriously affecting the quality of work produced by the machine.

It is, therefore, an object of this invention to provide an improved paper feeding device for application to conventional Mimeograph machines.

A further object of the invention is to providev an improved paper feeding device for application to a Mimeograph machine, the device being constructed and arranged to operably engage the marginal portion of the uppermost sheets of a stack of paper and propel the sheet to the printing cylinders.

A specific object of the invention is to provide a feeding device fo application to a Mimeograph machine, the device being constructed and arranged for accurate adjustment so that its components which engage the sheet to be printed or stencilled may be adjusted in conformity with the Width of the sheet to insure that the sheet is engaged only in its marginal areas by the feeding components of the device.

A more specific object of this invention is to provide an improved paper feeding device for application to a Mimeograph machine, the device being constructed and arranged for expeditious attachment to the conventional feed head carried by the feed pad rocker arm of the machine, and also constructed and arranged for- It is also an object of this invention to provide for use in a Mimeograph machine a paper feed attachment of generally improved construction, whereby the device will be simple, durable, and inexpensive in construction, as well as convenient, practical, serviceable, and eflicient in its use.

With the foregoing and other objects in view which will appearas the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that various changes in form proportion, and minor details of construction may be made Within the scope of the claims without departing from the spirit or sacrificing any advantages of the invention.

For a complete disclosure of the invention, a detailed description thereof will now be given in connection with the drawings forming a part of the specifications, wherein: I

Figure 1 is a side elevational view of a conventional Mimeograph machine showing my invention applied thereto;

Figure 2 is a transverse section taken on the line 2--2 of Figure 1;

Figure 3 is a top plan view of the feed bar and feed which may be employed in practicing this invention.

Figure 4 is a transverse sectional view of the improved feed device taken on the line 4-4 of Figure 2.

Figure 5 is an end elevation view, partly in section, of a modified paper feeding device; and

Figure 6 is a fragmentary top plan view of Figure 5.

Referring to the drawings, in which corresponding parts'are indicated by similar reference characters, It! indicates a conventional Mimeograph machine of the type manufactured by A. B. Dick Company and known as Model 100. This machine includes a printing or stencilling cylinder H and a co-operating impression cylinder l2.

.A feed table I3 is provided, and a'stack of sheets impression paper P is fed to the stencilling cylin ders II and 12 by a rubber feed pad, not shown,

which is supported by the conventional feed head I 1. This head I! is supported at the outer terminal of a feed arm I8 which is secured to and supported by the conventional feed pad rocker bar 20, thatis mounted for oscillatory movement on the upper feed arm 2|, in conformity with the usual practice. The feed head I! is operated for reciprocatory and oscillatory movementin l conformityswith'usual practice, which is.wel1.under.- stood by those skilled in the art, as will be more fully explained hereinafter.

The mechanism for operating the feed-heady! and rocker bar is well known to those skilled disclosed. Feed legs 53 are provided, and each leg has a perpendicularly-extending flange 55 formed at one terminal, and this flange is received within the channel 43 of the bar 40. Each flange 55 has a threaded aperture 56 formed therein for the reception of the threaded shank of amachine-screw 51. Theshankpf each machine Screw:.5.1 isreceived:Withinbneadfthe elongated slots 44 of the bar 45, and when the ma- .chine screw 51 is tightened its enlarged head .enea' esthe outer surface of the bar 40, thereby securely'binding the feed leg 53 to the bar. Inasin the art, consequently it has not been illustrated in this application.

The feed head I! includesa.rectan ular body plate 23 having opposed downwardly disposed and transversely-extending flanges 25 :of conventional construction. A lockinglug 26 extends downwardly from the plate"23 .at-a pointtintermediate the flanges 25, and this lug is provided with. an elongated :transverselyeextending :recess 21 tor the reception of ;-a locking. earzztojoe "he1'.einafter disclosed. locking :pin .30 .slidably mounted in axiallyealigned cylindrical recesses 3 I: formed in i the lockingilug-gZB. Thelo'cking :pin 3!] has an annular :groove .32 ..formed' in its peripheral portion, :and a stop:ri.ng 33:is also seecured: to the peripheral portion-of the-locking pin .30 to limitithe outward movementzoftthe pin. The stop. ring 33 is: normally 1 held in; engagement with: an outer.- suriacezof .the. locking lugtzZG :by; a leaf spring 35. The opposedrterminals .of the leaf spring :35 engage .therinnerifaceof arflange 15, and its intermediate "portion yieldably .engages the inner=terminal ofi'the;lockingrpinfim-thereby biasing the pin for :outward movementywhich movement .is limited by the engagement :by the stop. ring 133 with the'outerssurface 'Of' lockinglug 2.6. The components .hereinbeioreidefinedare. of conventional constructionxand arrangement.

The improvedi panewfeed nattachmentaforn'iing .the subjec:t;m.atter of 7 this ;invention iiscadapted to replace the conventionalqrubhen fe.ed;pads, and this improved .feeder includeswaifeedibarzorbeam 40 which is preferably formedgofachannel-mateirial provided-:with1laterallyeproiectirigfflanges 4| and 42-that extend longitudinally along. the edges of the bar to define a channel 43 therebeftween.

:Mi ned .zelon ated slots e44 rare formecl ;.in'- .the feeder bar-40; adjacent its o-pposed;terminals,=:and

th intermediate portion of the bar 405113.5 2

..U -sh apejdattaching bracket n45 secured :thereto by attaching: flanges- 15- which extend therefrom and whichare welded or otherwisesecured toithe bar 40. A strip or plate 41 is secured to thcrintermediate portion of the securing bracket:45,.and this plate has an-attaching-ear=48 whichvextends perpendicularly therefrom. The .ear QB-has aazcircular aperture-: formed therein-which; is interrupted by a restricted-recess-5 l thatgextendsnut- .wardly through theattaching ear-:fromthe circular aperture 53. The. attaching ear -flz may the securedin any preferred manner to the-plate and in the arrangement j here :depictedthe Lear is provided with a perpendicularly-extenciing flange 52,-wh-ichjis welded oriotherwise gsecured .to the-upper surface of the-plate .41.

The attaching ear .4 8- is similar inconstruction and; performs the same function-as the -conventional attaching ear which is.:ca-rried hyithe :con-

ventional rubber feed padynot :shown. ilnthe conventional arrangement the :rubher feed mad is secured 1 to the :conventional :ieed heaicl- 11, 111

the manner in which this :afeedattachmentais .secured "to 1 the :head FL; as will :be phereinafter much asthe flange 55 of each le 53 is snugly :received within the channel 43 of the bar 40, each leg is held against rotary motion relative to thebar' lfl.

:Each leg 53 is provided with a perpendicularly-disposed feedjoot 60 which has a rubber 'feedpadiliLbonded or otherwise suitably secured 'to its outer or lower surface. Each feed foot and feedpad s of. rectangular 1configurationrandtheir len th; is :disposed transversely withirelaticmro the liar .40. :By this arrangement: the feed: legs 53 may:bciconveniently-andaccuratelynadlusted by manipulatingtheeadinsting screwsri'l sozthat the feed: pads engage E, the marginal areas dirt-he impression sheet.

In order to secure-the'impliovedif d idol/ice ;to the feed head 11, the locking pin 35 is pressed inwardly; against the z-tensiongcf itherspring 35., so that its annular groove :32; aligns with-the; recess 27 formed within the lug Z25. 'With the :ioclr'rng pin in thisposition; the securing arefifizismositioned wit-hinthe IGCBSSQZ'II with its rc'rrcuiamaperture 59in, axial alignment with :the pin-.35. How the pinds released and-the spring :35 moveszit longitudinally outward, thus-moving the 512063 of thepin '30 into the:;circularrrecess .50. hisilQQkS the improved feed-device to the :feed shear! 2-H, and Y inasmuchas :the 1 feed iegs-.53 {have been ad- 'justed causing the iced spade =6] .130 ;-engage :the marginal portions of the impression ;sheet,, it :is manifest that the printing or :stenciling area-rot the sheet will not be engaged by the feeder padifil. If. impress o pap El WflQRa iW- is=:beine Ti tothe; P inting .or' stenciling ;cy li nders,-;the ;openation of the feed device may: :cause the rieedmads 6| to create paper lint. This lint, however-,- -on';ly s eae i mar inal portion-of .th ssheet. thus leaving its 'printi-ng or rstenc g anea ssubstan! tialiyfree of? the hut so :that 151625 5611611". impres- 'sionsremain-clear and" well: defined.

By substitutingthisimproved; paperrfeedidevice for the conventional rubber reed pad -itis manifest that well defined characters may be stencflledon the impression sheet and that accurate ritegister be maintained, because 1 no: appreciable Quantity of: l nmducedaor depo ed; in the? impression area of'theiirnpression-sheet.

A modified form-of -rny invention is' disclosed in Figures. -5 and fi. This device r-incrlirdes gather yor-beam Alla which has --an. -attaching ear 45a c M0 the op p rti n of rthethar m; this attaching ear is similariinroonstruction endearrangement and performs thessarne function as the attaching ear '4 8 hereinbefore: disclosed; :Eecld legs/53a are-providedreach leg hayinga pernendicularl-y-extending flangefii'zmformed atione:terminal, said flanges having laterally :Proiecting flanges 55b and 55!: that extend longitudinally along theedgesofithe"flange 55azto-defineithe :channel 55d therebet-ween. tTheflegs ihaiarerad iiustablysecured to the bar dua hwmachinesscrews .-5'I-a,.' theshank of eachmachinea-scriewIn'flcing received within one :01 the'zeiong-ated sslots 44M formed in the flange 55a, and threaded portion of the screw being received in the threaded apertures 560. formed in the bar 40a. Each leg 53a is provided with a feed foot 60a and a feed pad Bla is secured to the lower face of each feed foot 60a.

This form of the feeding device may be readily secured to the feed head i! by inserting the attaching ear 48a in the recess 2! of the feed head I1. When the bar 40a is secured to the feed head H its feed legs 53a are adjusted to locate the feed pads 61a to engage the marginal area of the impression sheet to be stenciled or printed.

Having thus described my invention, what I claim as new and useful is:

1. In a Mimeograph machine, the combination with cooperable stencilin cylinders, a feed table, a feed rocker arm, a feed head carried by the said rocker arm, an attaching lug carried by the feed head and having a recess formed therein, a locking pin axially slidable within the recess, of a unitary bar, a securing ear carried by the bar and having an aperture formed therein and adapted to receive the locking pin to secure the bar to the feed head, spaced resilient feed pads secured at the outer terminals of the feed bar and located to spacedly and frictionally engage the marginal portions of a sheet of impression paper supported on the feed table to feed the sheet from the table to the stenciling cylinders of the machine.

2. In a Mimeograph machine, the combination with cooperable stenciling cylinders, a feed table, a feed rocker arm, a feed head carried by the said rocker arm, an attaching lu carried by the feed head and having a recess formed therein, a locking pin axially slidable within the recess, of a unitary bar, a securing ear carried by the bar and having an aperture formed therein adapted to receive the locking pin to secure the bar to the feed head, feed legs adjustably secured to the feed bar, a spaced resilient feed pad carried at the lower terminal of each feed leg and located to spacedly and frictionally engage the marginal portion of a sheet of impression paper supported on the feed tableto feed the sheet from the table to the stenciling cylinders of the machine.

3. A paper feed device for use in a Mimeograph machine having cocperable stencilin cylinders and a feed component, the device including a unitary bar, spaced resilient feeder pads supported at the outer terminals of the bar and adapted to spacedly and frictionally engage the marginal portion of a sheet of paper to feed the paper to the stenciling cylinders, and a securing ear carried by the .bar and adapted to be secured to the said feed component.

4. A paper feed device for use in a Mimeograph machine having cooperable stenciling cylinders and a feed component, the device including a unitary bar, feed legs adjustably secured to the terminals of the bar, spaced resilient feed pads supported at the lower terminal of the feed legs and adapted to spacedly and frictionally engage the marginal portions of a sheet of paper to feed the paper to the stenciling cylinders, and a securing ear carried by the bar and adapted to be secured to the said component.

5. A paper feed device for use in a Mimeograph machine having cooperable stenciling cylinders and a feed component, the device including a bar, feed pads supported at the outer terminals of the bar and adapted to engage the marginal portions of a sheet of paper to feed the paper to the stenciling cylinders, an attaching bracket carried by the bar, a securing ear carried by the attaching bracket and adapted to be secured to the feed component.

6. A paper feed device for use in a Mimeograph machine havin cooperable stenciling cylinders and a feed component, the device including a bar, feed legs adjustably secured to the terminals of the bar, feed pads supported at the lower terminal of the feed legs and adapted to engage the marginal portions of a sheet of paper to feed the paper to the stenciling cylinders, an attaching bracket carried by the bar, a securing ear carried by the attaching bracket and adapted to be secured to the said component.

'7. In a paper feed device for use in a Mimeograph machine and including a feed bar, an at- 40 taching bracket supported by the feed bar, an

attaching ear supported by the bracket, feed pads supported at the outer terminals of the feed bar and located to engage the marginal portions of a sheet of impression paper.

8. In a paper feed device for use in a Mimeograph machine and including a feed bar, an attaching bracket supported by the feed bar, an attaching ear supported by the bracket, feed legs adjustably secured to the terminals of the feed bar, and feed pads secured to the lower terminals of the feed legs and located to engage the marginal portions of a sheet of impression paper.

GEORGE W. WENDER. 

